namespace CSharpPro._1027;

public class UserServiceImpl : UserService
{
    public int Add()
    {
        throw new NotImplementedException();
    }

    public int Delete()
    {
        throw new NotImplementedException();
    }

    public int Update()
    {
        throw new NotImplementedException();
    }

    public List<Student> Query()
    {
        throw new NotImplementedException();
    }
}